Warden Attack 3Burst of Earth's Fury

You slam your weapon into the ground, causing the earth to toss and churn as if from an earthquake.

Encounter        Primal, Weapon
Standard Action      Close burst 1

Target: Each enemy in the burst

Attack: Strength vs. AC

Hit: 1[W] + Strength modifier damage, and the target cannot shift until the end of your next turn.

Published in Player's Handbook 2, page(s) 157.